S 28 X


View S 28 X Brochure





Vertical Reach 90′ 11″ 27.7 m
Horizontal Reach 77′ 9″ 23.7 m
Below Grade Reach w/ Tip Hose 57′ 1″ 18 m
Pipeline Diameter 5 in 125 mm
Boom Type/ Sections Double Z Boom/ 4
Boom Rotation 370 degrees
Unfolding Height 19′ 2″ 5.8 m
Outrigger Type- Front Hydraulic Telescoping & Jacking
Outrigger Type- Rear Manual Extension, Hydraulic Jacking
Outrigger Soil Pressure w/o Dunnage (front/rear) 287/221 psi 19.8/15.2 bar
Outrigger Soil Pressure w/ Dunnage (front/rear) 52/40 psi 3.6/2.8 bar
Outrigger Width, Front 19′ 7″ 5.9 m
Outrigger Width, Rear 11′ 10″ 3.6 m
Outrigger Length 21′ 7″ 6.6 m




Theor. Concrete Output (rod/piston) 208/159 cu yds/h 161/100 cu m/h
Max. Pressure on Concrete (rod/piston) 1007/70 psi 65/95 bar
Max. Strokes Per Minute (rod/piston) 32/32
Max. Aggregate size 2.5 in 63.5 mm
Material Cylinder Diameter 9 in 230 mm
Material Cylinder Stroke 79 in 2006.6 mm
Differential Cylinder Diameter 5.1 in 130 mm
Maximum Oil Flow 132.1 gal/min 500 l/min
Hydraulic Circuitry Type MPS
Valve Type M Rock
*Pump specifications are for standard units. Other units are available. Specifications are subject to change without prior notice.



4-Section Double Z

This boom offers more articulation than any other boom in its class. And with 540-degrees of articulation in the last two Z-fold sections, this boom gets you in places no other boom can.  

Generation 3 Pump Kit

Outperforms every other concrete pump on high visibility projects while also placing millions of yards on everyday pours.  

Vector Controls

Valuable operational data at your fingertips to allow monitoring of the pumping process from the remote control box.  

Rock Valve™

No other sequencing valve combines lowest cost per yard maintenance costs and ease of rebuilding as the Rock Valve™.
Do you own this pump? Email a review to marketing@schwing.com.